Segmentation Fault with big .qrc

I'm working on mini2440 64M and QT4.
I build my app with a images.qrc file included, which is originated by 3
icons, then I save app on a sdcard and run on mini2440 with ./app -qws and
everything works fine.
If I include a bigger qrc file (4 or more icons) I got segmentation fault.
Out of memory? My running ok app size is about 110kb and adding an icon I
get a few Kb more. It seems I have a lot of free memory I can use.
Free command gives:

[root@gei /]# free
       total used  free  shared buffers         
  Mem: 61900 13712 48188 0      12         
 Swap: 0     0     0                                   
Total: 61900 13712 48188 

I think I need some basic concepts...
Any idea?

Regards,
Corrado

Problem solved.
I had linker problems including c libraries in source code.
Converting from c to c++ and integrating in project now all is running.
Hope this could help someone else...
Corrado